The FT series of true, feed through, data connectors for electrical instrumentation are perfect for developing custom I/O configurations for wall plates, rack panels, etc.
All fit within a standard XLR panel cutout and use common cabling for front and back connections. No soldering and no punch terminations - just use the standard cable for that particular connector style. Mount from the front or back. A low rear profile accommodates the tightest behind-the-panel spaces.